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1 | /*************************************************************************** |
2 | * Copyright (C) 2006 by Gerd v. Egidy * | |
3 | * gve@intra2net.com * | |
4 | * * | |
5 | * This library is free software; you can redistribute it and/or modify * | |
6 | * it under the terms of the GNU Lesser General Public License version * | |
7 | * 2.1 as published by the Free Software Foundation. * | |
8 | * * | |
9 | * This library is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU Lesser General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU Lesser General Public * | |
15 | * License along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * | |
18 | ***************************************************************************/ | |
19 | #ifndef __LIBT2N_CONNECTION | |
20 | #define __LIBT2N_CONNECTION | |
21 | ||
22 | #include <string> | |
23 | ||
a7170401 GE |
24 | #include "types.hxx" |
25 | ||
26 | ||
a11e19b7 GE |
27 | namespace libt2n |
28 | { | |
29 | ||
94247295 GE |
30 | /** @brief a connection between client and server. abstact. |
31 | */ | |
a11e19b7 GE |
32 | class connection |
33 | { | |
34 | private: | |
35 | bool closed; | |
36 | ||
37 | protected: | |
38 | connection() | |
a7170401 | 39 | { closed=false; } |
a11e19b7 GE |
40 | |
41 | std::string buffer; | |
42 | ||
43 | typedef unsigned int packet_size_indicator; | |
44 | ||
45 | packet_size_indicator bytes_available(); | |
46 | ||
47 | virtual void real_write(const std::string& data)=0; | |
48 | ||
a7170401 GE |
49 | virtual std::ostream* get_logstream(log_level_values level)=0; |
50 | ||
a11e19b7 | 51 | public: |
07e98688 | 52 | virtual ~connection() |
a11e19b7 GE |
53 | { close(); } |
54 | ||
94247295 | 55 | /// is this connection closed or not |
a11e19b7 GE |
56 | bool is_closed() |
57 | { return closed; } | |
58 | ||
94247295 | 59 | /// close this connection |
a11e19b7 GE |
60 | virtual void close() |
61 | { closed=true; } | |
62 | ||
94247295 GE |
63 | /** @brief look for new data and store it in the local buffer |
64 | @param usec_timeout wait until new data is found, max timeout usecs. | |
65 | -1: wait endless | |
66 | NULL: no timeout | |
67 | @retval true if new data was found (does not mean that the received data | |
68 | is a complete packet though) | |
69 | */ | |
07e98688 | 70 | virtual bool fill_buffer(long long usec_timeout=-1)=0; |
a11e19b7 | 71 | bool get_packet(std::string& data); |
94247295 GE |
72 | |
73 | /// returns true if a complete data packet is in the buffer. retrieve it with get_packet(). | |
a11e19b7 GE |
74 | bool packet_available() |
75 | { return bytes_available(); } | |
76 | ||
77 | void write(const std::string& data); | |
78 | }; | |
79 | ||
80 | } | |
81 | ||
82 | #endif |